BCG, a tuberculosis vaccine known to induce trained immunity, has been linked to reduced Alzheimer’s risk. New study found that BCG changed how immune cells behaved, including in the fluid surrounding the brain and spinal cord, and altered markers linked to Alzheimer’s disease.

BCG, a tuberculosis vaccine known to induce trained immunity, has been linked to reduced Alzheimer’s risk. New study found that BCG changed how immune cells behaved, including in the fluid surrounding the brain and spinal cord, and altered markers linked to Alzheimer’s disease.